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Scalable Production and Thermoelectrical Modeling of Infusible Functional Graphene/Epoxy Nanomaterials for Engineering Applications

  • Azadeh Mirabedini*
    Azadeh Mirabedini
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
    DMTC Limited (Australia), Hawthorn, Melbourne, Victoria 3122, Australia
    *A. Mirabedini. Email: [email protected]
  • Liam Anderson
    Liam Anderson
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
  • Dennis Antiohos
    Dennis Antiohos
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
  • Andrew Ang
    Andrew Ang
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
    More by Andrew Ang
  • Mostafa Nikzad
    Mostafa Nikzad
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
  • Franz Konstantin Fuss
    Franz Konstantin Fuss
    Chair of Biomechanics, Faculty of Engineering Science, University of Bayreuth, Bayreuth D-95447, Germany
  • , and 
  • Nishar Hameed*
    Nishar Hameed
    Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
    *N. Hameed. Email: [email protected]
Cite this: Ind. Eng. Chem. Res. 2022, 61, 15, 5141–5157
Publication Date (Web):March 17, 2022
https://doi.org/10.1021/acs.iecr.1c04621
Copyright © 2022 American Chemical Society

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    Abstract

    Abstract Image

    The growing market for the application of carbon fiber reinforced polymers (CFRP) as structural components has necessitated the need to develop CFRPs with improved matrix properties to avoid the challenges associated with heat dissipation and electric current flow paths within the composites. In this work, we have developed infusible graphene nanoplatelets (GnP)-modified epoxy polymer nanocomposites containing 0.5–5.0 wt % GnP using two different processing techniques, (1) high-shear mechanical mixing (HMM) and (2) ultrasonication. Compared to HMM, ultrasonication enabled the proper exfoliation of graphene sheets within an epoxy matrix without damaging the sheet morphology of the nanoplatelets. The resulting ultrasonicated nanocomposite with the addition of 2 wt % GnP delivers a maximum electrical conductivity of 4.75 × 10–5 S/m. Unlike electrical conductivity, thermal conductivity properties of nanocomposites were found to be less dependent on the choice of processing method or restacking of graphene sheets at higher filler loadings. Slight improvements to thermal conductivity values were achieved for samples prepared through HMM compared to the ultrasonication method with a maximum value of 0.45 W m–1 K–1 at 5 wt % GnP. New effective thermal and electrical conductivity models were defined for randomly oriented two-phase heterogeneous nanocomposites so that the functional characteristics of GnP-epoxy nanocomposites could be predicted at different loadings. Ultimately, the optimized GnP-modified matrix containing 2 wt % GnP was successfully embedded into a carbon fiber laminate composite component using a customized vacuum infusion molding method to enhance the multiscale properties of FRPs. This solvent-free and industrially scalable process may pave the way to a future generation of smart self-sensing reinforced composites.

    Cited By

    This article is cited by 2 publications.

    1. Navid Sarikhani, Zohreh S. Arabshahi, Abbas Ali Saberi, Alireza Z. Moshfegh. Unified modeling and experimental realization of electrical and thermal percolation in polymer composites. Applied Physics Reviews 2022, 9 (4) , 041403. https://doi.org/10.1063/5.0089445
    2. Krishnamurthy Prasad, Rizwan Abdul Rahman Rashid, Novana Hutasoit, Suresh Palanisamy, Nishar Hameed. Fabrication of Metal/Graphene Composites via Cold Spray Process: State-of-the-Art and the Way Forward. C 2022, 8 (4) , 65. https://doi.org/10.3390/c8040065

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